Frank Dennull wasn't sure what his purpose was. Sex, drugs, and rock and roll: that was what he was into. Then, somewhere along the way, God got hold of him.

"I had a spiritual encounter than changed the direction my life was headed," Mr. Dennull said.

So he set up a band to portray this new direction, this idea that there was something stronger to live for. Because God was the influence for the band, Mr. Dennull asked him what he thought Dennull should call the band.

"I said, 'I want to represent you and give people inspiration.' And he answered me with simply, 'What's your purpose?'" Mr. Dennull said. "Everything we do is with a purpose. My purpose is to glorify God."

The band, Purpose, plays a mixture of classic rock and blues — what Mr. Dennull described as "crossover music."

"We're a little bit too church-y sometimes for the bar scene but we're too street level to be accepted as a worship band," Mr. Dennull said. "We have a unique promotion."

Mr. Dennull has many titles within the band, including lead singer, songwriter, manager and producer. His wife Wendy, whom he calls his "muse," sings as his harmony, "in both life and song," Mr. Dennull said. Ronan Storer plays percussion with Dan McAllister on drums and Reg Rose on lead guitar.

The band is still searching for a permanent base player and potential keyboardist and background singers.

Life House Church in Middleboro has served as the "home base" for Purpose and, though they are not on the worship team, they are eager to continue performing there. They play the first Friday of every month at the church's Freedom Biker event, and have been performing there since September of 2012.

But it's not only churches that the band performs for, because Mr. Dennull stressed that "Christian" is carefully put.

"We don't want to be tagged with any specific denomination, because God is bigger than that," Mr. Dennull said. "I won't make things religious — I live a practical life.

"I've been involved with demonic worship and witchcraft, so I can't play just 'Jesus music' because I've lived both sides."

Purpose performs in jails, inspiring youth who are choosing to get away from drugs, abuse, etc. with the help of music. They've played in nursing homes and adult day care centers.

"We try to be an inspiration and we've played in Maine all the way down to Florida," Mr. Dennull said.

Purpose is on the Internet and Internet radio. On ReverbNation (reverbnation.com), a networking site where local bands can sign in and share their bios, interviews, music, etc., Purpose sat in the top 10 on the rock charts for over two months, and are still in the top 40 today.

On their website, purposetheband.com, there are 13 songs that visitors to the site can listen to. Mr. Dennull recommended "Butterfly," "If You Die Today," and "What's Your Name."

"Butterfly" is Mr. Dennull's nickname for his wife, who writes on the band's website: "After 20 years of marriage and then a divorce, we were unable to 'fix it.' Only God has the power to heal a heart. It is His mercy and grace alone that can do that. As mentioned in the lyrics of this song, "Love is what Love did when Love forgot."

"If You Die Today" is intended to make people think about what people say about them, or what others will say when they are gone, according to Mr. Dennull. "Are we truthful [about] who we are, even to ourselves?"

And "What Was Your Name" was written around a homeless woman who Mr. Dennull and his wife used to see on Route 105 in Middleboro, near the Route 495 on-ramp.

"She was known as a wanderer and we wanted to know her story," Mr. Dennull said. "So we had a conversation with her."

They essentially conducted an interview with this woman and were able to convey that in the song that they wrote.

Their next big event is "Connect Fest 2013" in Rehoboth on Oct. 5, a festival "connecting Christian artists and non-artists in New England," according to its website.

"It's like a mini-Woodstock with all Christian music and over 25 bands," Mr. Dennull said.

For more information, visit theagapevine.ning.com/.

To read more about Purpose and their passion or to listen to their music, visit purposetheband.com.